RE: Aileron differential and a single servo?
Be careful bending the torque rod with it pre-installed... use the method with the extra "dogleg" and HOLD THE ROD while bending the end.
Trying to twist the rod between the 2 original beds can work ifyou have not assembled the model (as in the torque rod is not in the wing at all) but doing that with it in the model, you are likely to break somehting.